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  1. Xilinx - All Programmable
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  3. AR# 52820: 2012.3 Vivado Timing Analysis - Why is the Clock Uncertainty 0 ns for the output path analysis?

AR# 52820

2012.3 Vivado Timing Analysis - Why is the Clock Uncertainty 0 ns for the output path analysis?

Description

Why is the Clock Uncertainty 0 ns for the output path analysis?

In the ISE tools, the Clock Uncertainty was 25 ps for the output path analysis (FFS to PAD), but the Vivado tool reports 0 ps.

Solution

This issue is schedule to be fixed in the next major release of the Vivado tool.
AR# 52820
Date 08/07/2013
Status Active
Type Known Issues
Tools
  • Vivado Design Suite - 2012.3